dont know where you guys get these silly notions about legality.
if anything I would think it is legal everywhere - so long as you are party to the conversation.
but here's what I dragged up:
A majority of the states and territories have adopted wiretapping statutes based on the federal law. Thirty-eight states and the District of Columbia permit an individual to record a conversation to which they are a party without informing the other party that they are doing so. These laws are referred to as ?one-party consent? statutes, and as long as you are a party to the conversation, it is legal for you to record it.
Twelve states require, under most circumstances, the consent of all parties to a conversation. Those jurisdictions are California, Connecticut, Delaware, Florida, Illinois, Maryland, Massachusetts, Michigan, Montana, New Hampshire, Pennsylvania, and Washington. Be aware that you will sometimes hear these referred to inaccurately as ?two-party consent? laws. If there are more than two people involved in the conversation, all must consent to the taping.
http://expertpages.com/news/taping_conversations.htm
but regardless of legality - it could be misconstrued as unethical - even though I'm not sure why - so dont get caught. but it doesnt even seem that much of an issue - its an MD player/recorder - even if it blatantly play with it shortly before or after the interview, who is going to expect that you're taping the interview.
honestly I dont think it is that bad an idea - when interviewing, things seem to be moving at a very different speed from what you know they actually are.
its also a good idea to catch bad habits - like saying "ummmm..." 20 million times - which is the most annoying thing EVER!!
the only reason I wouldnt do it is because I would be tempted to listen to it over and over, critiquing myself endlessly. on top of that - if you say something DUMB you cant try to delude yourself into thinking that its not that bad!!